Paper-cutter.



Patent ed Mar. l2, l90l.

6. K. WHITE. PAPER CUTTER.

(Application filed Oct. 7,}899.)

4 Sheets-Sheet I.

(No Model.)

[NJ/awn MZW m: ponms Perms co. PHOTQ-LIYHQ. WASHINGTON, uc,

' Patented Mar. l2, I90I.

8. K. WHITE.

PAPER CUTTER.

(Application filed Oct. 7, 1899.)

4 Sheets-Sheet 2.

(No Model.)

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No. 669,869. Patented Mar. [2, 19m.

S. K. WHITE.

PARERCUTTER. (Appliceyion fllsd 066 7, 1699.)

4 Sheets-$heet 3.

' (No Model.)

WITNESSES,

Tn: NORRIS Fermi col. mmmumcd WASHINGTON. a. c.

No. 669,869 Patented Mar. l2, mm,

s. K. WHITE.

PAPER CUTTER.

' (Application filed Oct. 7, 1.899.)

(No Model). 4 Shasta-Sheet 4.

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llNTTan STATES PATENT @rricn.

SAMUEL K. WHITE, OF MYSTIC, CONNECTICUT, ASSIGNOR TO THE STANDARMACHINERY COMPANY, OF SAME PLACE.

PAPER-CUTTER.

fiPECIFICCATIQN formingpart of Letters Patent No. 669,869, dated March12, 1901. Application filed October '7, 1899. Serial No. 732.850. lllomodel.)

To CLZZ who/7t it may concern: In the drawings, Figure 1 is a reareleva- Be it known that I, SAMUEL K. WHITE, of tion of a cutterembodying all the features of Mystic, county of New London, State ofConthe presentinvention in their preferred forms. necticut, haveinvented certain new and use-. Fig. 2 is a horizontal sectional viewtakenbe- 5 ful Improvements in Paper-Cutters; and I do low the table.Fig. 3 is a side elevation. Figs. hereby declare the followingspecification, 4 and 5 are details of a part of the starting taken inconnection with the accompanying and stopping mechanism. Fig. 6 is adetail drawings, forming a part of the same, to be a of the clutch foroperating the pusher. Fig. full, clear, and exact description thereof. 7is a detail of the hand-recesses in the table. 1o Theinvention relatesto that class of paper- Fig. 8 is a detail of the front end of the slidecutters in which the sheets to be out are held to which the back gage isconnected. Fig. 9 upon a table by a clamping-bar and are acted is asectional detail through the end of the upon by a reciprocatingcutter-blade. guide 97 at the right of 3. Fig. 10 is a Certain featuresof the invention relate to detail showing the arms lOl. Fig. 11 is a de-I5 the mechanism for regulating the pressure of tail of the means forpositively starting the the clamp upon the pile of sheets according rod29, and Fig. 12 is adetailof thedriver for to the resistance offered bythe sheets to the operating the clamp-bar. passage of the cutter-blade,the construction Referring to the drawings in detail, the being suchthat the pressure of the clamp will knife-bar 1 is guided in verticalslots 2, formed 20 increase as the resistance to the cutter inin theside frames 3, and is hung upon links creases. In a previous applicationI have 4, as is common in this class of cutters. The shown a mechanismfor accomplishing this knife-bar is connected to its operating-leverresult by operating the clamp through a mov- 5 by a link 6 in the usualmanner, and said able member which is frictionally connected lever isprovided with a weight 7, operating 25 with the clamp and regulating thefriction ac-' to rock said lever in a direction to move the cording tothe resistance to the cutter, and in cutter into its raised position andto hold said said application I have claimed, broadly, this cutter inthis position until the mechanism manner of operating the clamp. In thepresfor drawing the cutter down is thrown into ent construction the samebroad invention action. lheclamping-barSissuitablyguided 8o 0 isemployed, but a more simple and efficient in the side frames 3 and isconnected at each mechanism is provided. end with a rack 9 by means of abar 9, which Further features of invention relate to the is bolted tothe rack and to the end of the means for advancing the pile ofcut-sheets clampingbar. The clamping-bar is forced under the cutter, sothat they may be readily down upon the pile of sheets supported on the 5and conveniently removed, and consist gentahlelO by mechanism, to bedescribed, which erally in providing mechanism for automaticoperatessaid bar through said racks, and said ally operating the means whichthus moves bar is raised by means of a weighted lever 11, the sheets,which mechanismmay be thrown which is connected with one of said racksinto operation at the will of the operator and through a link 12. 40which when thrown into action automatically The various mechanisms ofthe machine advances the pile of sheets under the knife are driven froma driving-shaft l3. suitably without altering the setting of the backgage. mounted in the frame and having a balance- Further features ofinvention relate to the wheel 14 secured to one end thereof. Apulmechanism for starting and stopping the maley 15 is secured to theshaft 13 by being bolt- 5 5 chine and also to the means for depressinged to the wheel 14, and a stud 16 is secured the clamping-bar at thewill of the operator in said pulley, upon which is mounted the withoutoperating the cutting-blade. loose pulley 17. The mechanism for operat-Other features of invention relate to coming the k nife-lever is drivenfrom the shaft binations and constructi ms which will be re- 13 througha friction-clutch 18, one member 50 ferred to hereinafter, andparticularly pointof which is secured to said shaft and the other ed outin the claims. member of which is secured to a sleeve 19,

through which said shaft passes. The sleeve 19 is suitably mounted inthe side frame 3 and carries a pinion 20 at its outer end. The pinion 20engages and drives a gear2l, connected with the knife-operating shaft 22by means to be described. The cutter-operating lever 5 is operated fromthe shaft 22 by means of a chain 23, which passes over a sprocket-wheel24, secured to said shaft, and is connected with the end of said leverby means of a hook 25 on said lever which engages one of the links ofsaid chain.

The clutch 18 is thrown into operation by power-driven means, which maybe thrown into action at the will of the operator, and the clutch mayalso be thrown out of action at the will of the operator to arrest thedescent of the knife and return it to its raised position. If thedescent of the knife is not stopped by the operator, then the clutch 18is automatically released and the knife returned after the cut isfinished. Thus the knife-bar may be accurately controlled by theoperator with the expenditure of very little manual power. Anysuitablemechanism may be employed for thus controlling the knife-opcratingmechanism, and in the machine shown a preferred form of mechanism isshown for accomplishing this purpose,which in itself embodies severalfeatures of invention, as will more definitely appear from the claims.As shown, the operatingarm 26 of the main clutch 18 is arranged to beengaged by a cone 27, mounted on the shaft 13 and engaged by a yoke 28,secured to a reciprocating operating bar or rod 29. The'rod 29 isnormally held in its retracted position with the cone 27 out ofengagement with arm 26 by a spring 30, interposed between frame 3 and acollar 31 on said rod, Fig. 2. The rod is advanced to engage the clutch18 by a novel mechanism which embodies certain features of invention.This mechanism consists of a rotating member, a second member arrangedtobe normally rotated by the engagement between said members and acam-surface on one of said members arranged to cause a longitudinalmovement of said second member when said member is held from rotation.In the construction shown the rotating member consists of a collar ordrum 32, secured to a shaft 33, which is continuously driven from thedriving-shaft 13 by means of a gear 34, secured to said shaft 13 andengaging a gear 35, secured to shaft 33. The drum 32 is provided with aseries of inclines or cams 36, which engage a series of correspondinginclines 37 on a second drum 38, loosely mounted on the shaft 33 andyieldingly held against the drum 32 by a sleeve 39, which surroundsshaft 33, and is formed on the end of an arm 40, projecting laterallyfrom a sleeve 41, mounted on rod 29. The sleeve 41 is loosely mounted onrod 29 and is held in place by a collar 42, pinned to said rod. Thedrums 32 and 38 normally rotate in unison by reason of the engagement ofthe cam-surfaces 36 and tain distance.

37. When the rod 29 is to be advanced to engage clutch 18, the rotationof drum 38 is arrested and said drum is then moved longitudinally by theaction of the cam-surfaces, and through the connections described thislongitudinal movement is transmitted to rod 29. When the rod 29 isadvanced, it is held in its advanced position by means of a catch in theform of a locking-lever 43, which engages a collar 44, secured to rod29, and holds said rod against the tension of spring 30. The lever 43 isforced in a direction to move it into the path of the collar 44 by meansof aspring 45, connected at one end with an arm 46, extending down fromsaid lever, and at the other end to an arm 47, secured to rod 29. Whenthe rod is in its retracted position, the lever 43 is held down againstthe tension of the spring by the collar 44, as shown in Fig. 1.

The lever 43 may be rocked to release rod 29, and thus throw theknife-operating mechanism out of operation either by the operator orautomatically when the cut is finished. The mechanism shown for trippingsaid lever 43 automatically consists of an arm or lever 49, Fig. 4,secured to the shaft 50, to which said lever is secured, and having itsend arranged in the path of the knife-lever, so that when said lever hasbeen raised to a certain position it will strike said arm and rock-shaftand lever 43. The mechanism shown for tripping said lever 43 at the willof the operator will be described in connection with the mechanism forarresting the rotation of drum 38.

The drum 38 is held from rotation at the desired time by means of a stop51, formed on theend of a lever 52 and arranged to be moved into thepathof one or more shoulders 53 on drum 38. The shoulders 53 are formed byribs projecting from the periphery of the drum 38, as shown in Figs. 4and 5. The stop-lever 52 is connected by means of a link 54 with an arm54, secured to a rock-shaft 55 at the front of the machine. A hand-lever55 is secured to the shaft 55 within convenient reach of the operatorand is normally held in position to hold lever 52 away from drum 38 by aspring-pressed pin 56, the V- shaped end of which rides over the end ofan arm 57, projecting from the shaft 55. The inclines 36 and 37 arepreferably of such shape that the rod 29 will be advanced far enough tobring the collar beyond the end of lever 43 before said inclines havepassed each other, and a cam is preferably carried by the drum 38 fordisengaging the stop 51 before said inclines have passed each other, sothat said inclines are always in engagement. Such a cam is shown at 58,arranged to force the stop 51 back after the drum 38 has moved a cer- Inthe construction shown the lever 55 is also employed to trip thelockinglever 43 at the will of the operator in the following manner:An'arm 59 is connected with the lever 52, and the end of said arm isconnected by means of a link or rod with the rear end of lever 43, thearrangement being such that when the lever 55 is moved in the directionof the arrow, Figs. 3and 4, the arm 59 is lifted to trip the lever 43and throw the knife-operating mechanism out of operation. When the lever55 is moved in the opposite direction to throw the knife-operatingmechanism into action, the rod 60 slides freely through the end of lever43. Means are preferably provided for positively starting the rod 29back when the lever 43 is tripped, so that any tendency for the bar tofail to start will be overcome and the action of the spring 30 be mademore sure and positive. A further advantage of such a means is that itenables the use of a lighter spring 30 and makes the operation of theparts more sensitive. This means preferably consists of a link 61,pivoted to the end of arm 47 and provided with a slot 62, in which ridesa pin (53 on the arm 46 referred to. The length of slot 62 is such thatwhen lever 43 is rocked to release rod 29 the pin 63 will engage the endof said slot and draw the rod 29 back a short distance. The engagementof the pin 63 with the end of the slot 62 does not occur until the lever43 has moved out of engagement with the collar 44.

The movement of the rod 29 also throws into and out of action themechanism for operating the clamping-bar in the following manner: Theclamping bar is operated through a shaft 64, which carries pinions 65,engaging racks 9. A clutch 66 is mounted on the shaft 64, one member ofsaid clutch being fast to said shaft and the other member being formedin a driving-gear 67. The operatingarm 68, Fig. 1, of said clutch isoperated by a cone 69 on the shaft 64, said,

cone being connected with the rod 29 by a yoke 70. When the rod 29 isadvanced, the clutch 66 is engaged and the clamping-bar forced down uponthe paper, and when said rod is retracted said clutch is disengaged andthe clampingbar is raised by the weighted lever 11. The mechanism foroperating the clamping-bar is driven by a friction driver or clutch, andthe friction of said driver is increased as the resistance to the knifein- :reases, so that the paper will be clamped with a pressureproportional to the resistance to the knife. In the construction shownthe friction-driver is mounted on the knife-operating shaft and consistsof two friction-cones 71 and 72, keyed to the shaft 22, and a sleeve 73,provided with conical recesses in its ends for engaging said cones. Thedriver is connected with the gear 67 by means of a gear 74, formed onsleeve 73, and an intermediate gear 75, which engages gear 67 and gear74. The cone 71 is pinned to the shaft 22; but the cone 72 may movelongitudinally on said shaft to vary the friction between the parts ofthe driver. The hub of cone 72 forms one part of the coupling forconnecting the gear The other part of said coupling consists of a sleeveor drum 76, keyed to the sleeve 77, which passes through the frame 3 andforms the hub of gear 21. The parts of the coupling are connectedtogether by means of inclines 78, which form clutch-faces for causingthe one part to drive the other, and also form cams tending to force theparts of the coupling away from each other, which force will increase asthe resistance to the rotation of the driven part of the couplingincreases. Since the knife is forced through the paper by the rotationof shaft 22, which is keyed to the cone 72, and said cone is driven bythe engagement of the cam-surfaces 78, said cone will he forcedlongitudinally with a pressure increasing as the resistance to the knifeincreases. The pressure between the cones 71 and 72 and the sleeve 73will therefore increase with the resistance to the knife, causingincreased friction between the parts of the driver which operates theclamp, and therefore forcing the clamp more firmly upon the paper. Thereshould be sufficient friction between parts of the friction-driver tobring the clamp down upon the paper in ad Vance of the knife, and thisfriction may be regulated to increase or diminish the force with whichthis initial clamping is done by adjusting the normal pressure betweenthe parts of the friction driver. The means shown for effecting thisadjustment consists of a nut 79, which engages a screw-thread on the endof shaft 22. This nut is provided with an arm 80, which carries a pin81, arranged to engage any one of a series of holes formed in a plate82, keyed to the shaft 22. By turning said nut the shaft 22 may be movedlongitudinally to draw the cones 71 and 72 and sleeve 73 more or lessfirmly together.

It is sometimes desirable to bring the clamp down upon the paper withoutthrowing the knife into operation, and with the present invention thisis effected by power-driven mechanism which is thrown into and out ofoperation at the will of the operator. The preferred form of such amechanism consists of a frictional driven gearing for connecting theshaft 64 with a constantly-running shaft, such as shaft As shown, theshaft 33 carries a friction-pulley 83, which is arranged to be engagedby a friction-pulley 84, carried on a lever 85, which is pivotallymounted on the shaft 64. A pinion 86 is connected with pul ley 84 andengages a gear 87, secured to the shaft 64. The lever 85 may be rockedto carry the pulley 84 into engagement with pulley 83 by connecting theend of said lever with an arm 88, secured to a rock-shaft 89. The arm 88is weighted to hold the pulley 84 normally away from the pulley 83. Therock-shaft 87 is provided with an arm 90, which is connected by means ofa link 91 with one arm of a rock-lever 92, the other arm of which isconnected by a rod 93 with a treadle 94, located 21, heretoforedescribed, with the shaft 22. in a convenient position at the front ofthe lOO machine. By pressing down the treadle the operator causes theclamp to be brought onto the paper at will.

The paper to be cut is supported upon the table and the size of thesheets out is regulated by a back gage 95. After the sheets are out theymay be pushed forward under the knife, so that the operator is notobliged to put his hands under the knife in removing the paper. With thepresent invention the means for pushing the cut sheets under the cutteris. operated by a power-driven mechanism which is thrown into operationat the will of the operator. In the machine illustrated the back gage isutilized to push forward the out sheets, and is then returned to itsformer position, so that the setting or adjustment of said gage relativeto the knife is not altered. It will be understood, however, that meansother than the back gage may be used for this purpose without departingfrom the invention. In order that the gage may be thus used, it isconnected with a slide 96, mounted in guides 97 under the table. Thisslide normally stands in a definite position, with its end abuttedagainst a stop 98 on the table. Said slide may be held against said stopbya spring 99. The back gage is set for the size of sheets to be out byadjusting said gage relative to said slide, and the setting of said gagewill not be affected, therefore, by the operation of pushing the outsheets forward, since said slide is always returned to the sameposition. The gage is guided by a slot 100 in the table and is providedwith depending arms 101, to which the ends of a cable 102 are secured.The cable passes around a pulley 103 at the rear of slide 96 and a drum104 at the front end of said slide. A handwheel 105 is connected withdrum 104, by turning which the back gage may be adjusted. A graduatedtape'106 also has its ends secured to the arms 101 and passes overpulleys at the ends of the slide 96. The graduj ations on the tape areso arranged that the adjustment of the back gage may be read at thefront of the machine. The drum 104 may be clamped to hold the back gagein its adjusted position by a clamping-handle 107.

In the machine shown the power for operating the slide 96 is taken fromthe shaft 33 by a mechanism which in itself embodies certain features ofinvention. This mechanism embodies a continuously-rotating clutch memberand a second clutch member which carries a cam for positively throwingthe members into engagement and a second cam for throwing the membersout of engagement after the clutch has made a single revolution. Thecontin uously-rotating clutch me mher 108 is secured to the end of shaft33, and the second clutch member 109 is keyed to slide on the end of ashort shaft 110, mounted in a bracket 111 and arranged in line with theshaft 33. The shaft has a crank-arm 112 secured to its otherend,which isconnected by means of a rod 113 with the slide 96.

The member 109 carries a cam 114, Fig. 6, arranged to be moved intoposition to engage an abutment in the form of a pin 115 when said memberis moved toward the member 108. A slight movement of the member 109brings the teeth of the clutch into engagement, so that member 109 willrotate with member 108, and the rotation of member 109 causes the cam114 to ride against pin 115, forcing the teeth of the clutch memberspositively into engagement. When the member 109 has made a singlerevolution, a cam 116 on said member rides against a second abutment 117and forces member 109 back and positively disengages the clutch members.It is preferred to connect cams 114 and 116 by a rib 118, which runsbetween the pins 115 and 117 and positively holds the clutch members inengagement during the rotation of member 109. During the single rotationof shaft 110 thuseffected the crank-arm 112 acts to advance the slide 96andreturn it to its normal position. The clutch member 109 is given itsinitial longitudinal movement by a lever 119, one end of which rides inan annular groove 120, formed in the hub of member 109. The other end ofsaid lever is connected by means of a link 121 with an operating-lever122, located at the front of the machine. Thus by rocking the lever 122the operator may cause the pile of cut sheets to be quickly advancedunder the knife, where they may be readily grasped by the hands andremoved. The table 10 may be and preferably is provided with recesses123 in front of the knife, over which the edge of the pile lies whenadvanced, so that the hands may be readily inserted under the pile inremoving the same.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a paper-cutter, the combination with the knife-bar, of mechanismfor operating the same, a main shaft, devices operated therefrom forthrowing said operating mechanism into operation, and means for throwingsaid devices into operation at will.

2. In a paper-cutter, the combination with the knife-bar, of mechanismfor operating the same embodying a clutch, a main shaft, mechanismoperated therefrom for engaging said clutch, and means for throwing saidlatter mechanism into operation at will.

3. In a paper-cutter, the combination with the knife-bar, of mechanismfor operating the same, a main shaft, devices operated therefrom forthrowing said operating mechanism into operation, means for throwingsaid devices into operation at will, and mechanism for throwing saidoperating mechanism out of operation automatically.

4. In a paper-cutter, the combination with the knife-bar, of mechanismfor operating the same, a main shaft, devices operated therefrom forthrowing said operating mechanism into operation, means for throwingsaid devices into operation at will, mechanism for throwing saidoperating mechanism out of.

operation an tom atical ly,and means for th I( I wing said operatingmechanism out of operation at will.

5. In a paper-cutter, the combination with the knife-bar, of a clutchthrough which said bar is operated, a main shaft, mechanism for engagingsaid clutch, means operated from said shaft for throwing said mechanisminto operation at will, a latch for holding said clutch in engagement,and means for tripping said latch at will to release said clutch.

6. In a paper-cutter, the combination with the knife-bar, of a clutchthrough which said bar is operated, a main shaft, mechanism for engagingsaid clutch, means driven from said shaft for throwing said mechanismint-o operation at will, a latch for holding said clutch in engagement,and means for automatically tripping said latch to release said clutch.

7. In a paper-cutter, the combination with the knife-bar, of a clutchthrough which said bar is operated, a rod for operating said clutch, amain shaft, mechanism operated from said shaft for advancing said rod, alatch for holding said rod advanced, means for throwing said mechanisminto operation at will, and means for tripping said latch to releasesaid clutch.

8. In a paper-cutter, the combination with the knife bar, and itsoperatinglever, of mechanism for operating said lever, a main shaft,mechanism operated from said shaft for throwing said operating meansinto action, a latch for holding said mechanism in action, and meansoperated by the operating-lever for tripping said latch.

9. In a paper-cutter, the combination with the knife-bar, andoperating-lever, of mechanism for operating said lever, a latch forholding said mechanism in action, a rockshaft carrying said latch, anarm connected to said shaft and arranged in the path of said lever.

10. In a paper-cutter, the combination with the main clutch, ofmechanism for operating the same comprising a rotating member, a secondmember driven by engagement with said rotating member, one or morecam-surfaces on one of said members for causing a longitudinal movementof said second memher when said member is held from rotation,

and means for preventing the rotation of said second member at will.

11. In apaper-cutter, the combination with the main clutch, of mechanismfor operating the same comprising a rotary member, a second memberdriven by engagement With said rotating member, one or more cam-surfaceson one of said members for causing a longitudinal movement of saidsecond member when said member is held from rotation, one or moreshoulders on said second member, and a movable stop for engaging thesame.

12. In a paper-cutter, the combination with the main clutch, ofmechanism for operating the same comprising a rotary member, a secondmember driven by engagement with said rotary member, one or morecam-surfaces on one of said members for causing a longitudinal movementof said second member when said member is held from rotation, one ormore shoulders on said second member, a stop for engaging the same, andmeans for operating said stop at will.

13. The combination of a rotary member, a second member driven byengagement there with, one or more cam-surfaces on one of said membersfor causing a longitudinal movement of said second member when saidmember is held from rotation, and means for preventing the rotation ofsaid second member.

14. The combination of a rotary member, a second member driven byengagement therewith, one or more cam-surfaces on oneof said members forcausing a longitudinal movement of said second member when said memberisheld from rotation,one or more shoulders on said second member, and amovable stop for engaging the same.

15. The combination of a rotary member, a second member driven byengagement therewith, one or more cam-surfaces on one of said membersfor causing a longitudinal movement of said second member when saidmemberis held from rotation,one or more shoulders on said second member,a movable stop for engaging the same, and one or more cams on saidsecond member fordisengaging said stop.

16. In a paper-cutter, the combination with a clutch-operating rod, of aspring for retracting thesame,arotatingdrum32,asecond drum 38, engaginginclines 36 and 37 on said drums, connections between drum 38 and saidopering-rod, shoulders 53 on drum 38, a movable stop for engaging thesame, a locking-lever 43 for holding said operating'rod advanced, andmeans for tripping said lever.

17. In a paper-cutter, the combination with a clutch-operating rod, aspring for retracting the same, mechanism for advancing said rod, alatch for holding said rod advanced, means for tripping said latch, andmeans positively starting said rod rearward.

18. In a paper-cutter, the combination with a clutch-operating rod 29,of mechanism for advancing the same, a spring for retracting said rod, alocking-lever 43 for holding said rod advanced, a link 61 connected withsaid rod, a slot 62 in said link, an arm 46 connected with said lever43, a pin on said arm riding in said slot and arranged to en gage theend of said slot and start said rod back when said lever 43 is tripped,and means for tripping said lever.

19. In a paper-cutter, the combination with the knife-barandoperating-lever, of mechanism for operating said lever, a latch forbolding said mechanism in action, a rock-shaft carrying said latch, anarm carried by said rock-shaft and arranged in the path of said lever,and connections between said latch and a hand-lever.

20. In a paper-cutter, the combination with the knife-bar, of mechanismfor operating the 7 same, mechanism for throwing said operatingmechanism into operation embodying two rotary members connected byengaginginclines, a stop-lever 52 for holding one member from rotation,a lever 4:3'for holding said operating mechanism in action, a lever 55and connections between said lever and levers 52 and 43.

21. In a paper-cutter, the combination with the knife-bar, of mechanismfor operating the same embodying a two part coupling or clutch, theparts of which are provided with one or more engaging inclines, aclampingbar, operating mechanism therefor embodying a friction-driverarranged to receive the direct thrust of said coupling.

22. In a paper-cutter, the combination with the knifebar, of a two-partcoupling or clutch, connections between one part of said coupling andsaid knife-bar, means for driving the other partof said coupling, one ormore cam-surfaces forming the connections between the parts of saidcoupling, a clamp ing-bar, a friction-driver for operating saidclamping-bar arranged to hold the parts of said coupling in engagement.

23. In a paper-cutter, the combination with a knife-operating shaft, aclamping; bar, a driver therefor consisting of one or morefriction-cones connected with said shaft, a sleeve on said shaft havinga corresponding cone or cones, gearing between said sleeve andclamping-bar, a two-part coupling or clutch, means for rotating one ofsaid parts, means for connecting the other part to said shaft, one ormore cam-surfaces connecting the parts of said coupling, and aconnection between said driver and coupling whereby the parts of saiddriver are forced together by the longitudinal movement of one of theparts of said coupling.

24:. The combination with a shaft, ofa friction-cone 71 secured thereto,a sleeve 73 having a corresponding conical surface, a driving-gearcarried by said sleeve, a part keyed to slide on said shaft and engagingsaid sleeve, a rotary part held from longitudinal movement, andcam-surfaces as 78 connecting the rotary and sliding parts.

25. The combination with a shaft, of a friction-cone 71 secured thereto,a cone 72 keyed to slide thereon, a sleeve 73 between said cones andprovided with conical engaging surfaces, a driving-gear connected withsaid sleeve, a rotary part 76, and cam-surfaces 78 connecting part 76and cone 72.

26. In a paper-cutter, the combination with the knife-bar andclamping-bar, of a frictiondriver for operating the clamping-bar, meansfor regulating the friction by the resistance to the knife, and a clutchfor connecting said driver with and disconnecting it from said clamp.

27. In a paper-cutter, the combination with the knife-bar andclamping-bar, of a frictiondriver for operating the clamping-bar, meansfor regulating the friction by the resistance to the knife, and meansfor adjusting the initial friction of said driver.

28. In a paper-cutter, the combination with the knife-bar, andclainping-bar, of mechanism l'or operating the cutter-bar embodying atwo-part coupling connection between one of said parts and thecutter-bar, cam-surfaces connecting the parts of said coupling,a-friction-driver for operating the clamping bar arranged to resist theseparation of the parts of said coupling, and means for adjusting thefriction of said driver.

29. In a paper-cutter, the combination with a shaft 22 foroperating theknife-bar, frictioncone 71 secured thereto, sleeve 73 having a conicalsurface engaging cone 71, a clampingbar gearing between sleeve 73 andsaid bar, a part keyed to slide on shaft 22 and engaging said sleeve, arotary part, cam-surfaces connecting said sliding and rotary parts, anda nut on the end of shaft 22 for drawing said cones and sleeve together.

30. The combination with shaft 22, cone 71, sleeve 73, cone 72 havingcam-surfaces 78, drum 76 having cam-surfaces 78, sleeve 77, gear 21connected thereto, arm 82, nut 79, armSO, and pin 81.

31. In a paper-cutter, the combination with ash-aft 22 for operating theknife-bar, frictioncone 71 secured thereto, sleeve 73 having a conicalsurface engaging cone 71, a clamping bar, gearing between sleeve 73 andsaid bar, a part keyed to slide on shaft 22 and engaging said sleeve, arotary part as 76 and cam-surfaces as 78 connecting said sliding partand part 76.

32. In a paper-cutter, the combination with a shaft 22 for operating theknife-bar, frictioncone 71 secured to said shaft, friction-cone 72 keyedto slide on said shaft, a sleeve 73 between said cones and provided withconical engaging surfaces, a clamping-bar, gearing between said bar andsleeve, a rotary part as 76, and cam-surfaces as 78 connecting part 76and cone 72.

33. In a paper-cutter, the combination with the knife-bar, andclamping-bar, of mechanism for operating said knife-bar embodying aclutch, a friction-driver operating said clamping-bar, gearingconnecting said driver and clamping-bar embodying a clutch, means forsimultaneously operating said clutches, and means for regulating thefriction of said driver by the resistance to the knife.

34:. In a paper-cutter, the combination with the knife-bar andclampingbar, of mechanism for simultaneously operating the knifebar andclamping-bar, a main shaft, mechanism operated therefrom for bringingthe clamping-bar down upon the paper independent of the operation of theknife-bar, and means for throwing said latter mechanism into action atwill.

35. In a paper-cutter, the combination with the knife-bar, andclamping-bar, of mechanism for simultaneously operating the knifebar andclamping-bar, frictional gearing for operating said clamping-barindependently of said knife-bar, and means for throwing said gearinginto operation at will.

36. In a paper-cutter, the combination with the clamping-bar, of anoperating-shaft connected therewith, a lever pivotally mounted 'thereon,a friction-pulley mounted on said lever and geared to said shaft, aconstantlyrunning friction-pulley, and means for moving said lever atwill to engage said pulleys.

37. In a paper-cutter, the combination with the knife-bar, of a backgage, means for advancing the pile of cut sheets under the knifebarwithout altering the setting of the back gage, a power-operated driverfor said means, and means for throwing said driver into operation at thewill of the operator.

38. In a paper-cutter, the combination With the knife-bar, of a pusherfor advancing the pile of cut sheets under the knife-bar, a main shaft,mechanism operated therefrom for advancing and returning said pusher,andmeans for throwing said mechanism into action at will.

39. In a paper-cutter, the combination with I the knife-bar, of a pusherfor advancing the pile of cut sheets under the knife, a crank connectedwith said pusher, a driver for operating said crank, and means forthrowing said driver into action at will.

40. In a paper-cutter, the combination with the knife-bar, of a pusherfor advancing the pile of cut sheets under the knife, mechanism foroperating said pusher comprising a rotating clutch member, a secondclutch member, means for disengaging said members after a singlerevolution of said second member, and means for engaging said members atwill.

41. In a paper-cutter, the combination with the knife-bar, of a pusherfor advancing the pile of cut sheets under the knife, mechanism foroperating said pusher comprising a rotary clutch member, a second clutchmember, a cam on said second member for disengaging said mem her after asingle revolution,

an abutment in the path of said cam, and means for engaging said membersat will.

42. In a paper-cutter, the combination with the knife-bar, of a pusherfor advancing the pile of cut sheets under the knife mechanism i'oroperating said pusher comprising a rotating clutch member,a secondclutch member, a cam on said second member for moving said member towardsaid rotary member, a cam on said second member for disengaging saidmembers, abutments in the paths of said cams, and means for moving saidsecond member toward said rotary member at will.

43. The combination of the rotary member 108, the longitudinally-movablemember 109, cams 114 and 116 carried by member 109, abutments 115 and117 and means for moving member 109 toward member 108.

44. The combination of the rotary member 108, the longitudinally-movablemember 109, cams 114 and 116 carried by member 109, a web 118 connectingsaid cams, abutments 115 .and 117, and means for moving member 109toward member 108.

45. In a paper-cutter, the combination with a slide, of a back gageadjustably connected with said slide, mechanism for automaticallyadvancing said slide and returning the same i therewith, a crankconnected with said slide,

mechanism thrown into operation at will for giving said crank a singlerevolution.

7 SAMUEL K. WHITE.

Witnesses: 7

JOHN HENSHAW, IRA L. FISH.

